Agestam_1985_volume_Spruce_SI | R Documentation |
Volume function for Spruce from Agestam (1985), including SI.
Agestam_1985_volume_Spruce_SI(
basal_area_Spruce_m2_ha,
SI_Spruce,
age_at_breast_height_Spruce,
stems_ha_Spruce,
stems_ha_other
)
basal_area_Spruce_m2_ha |
Basal area over bark Spruce, m2/ha. |
SI_Spruce |
Site Index H100 of Spruce, meters, from Hägglund 1972,1973. |
age_at_breast_height_Spruce |
Age at breast height of Spruce stems. |
stems_ha_Spruce |
Spruce stems per hectare. |
stems_ha_other |
Stems per hectare of other tree species. |
Function: G2
Number of plots: 143
Multiple correlation coefficient: 0.997
Standard deviation about the function (sf): 0.060
sf/standard deviation about the mean: 8.3
Volume Spruce m3sk/ha.
Agestam, E. (1985) 'A growth simulator for mixed stands of pine, spruce and birch in Sweden. Diss. Swedish University of Agricultural Sciences. Report no. 15. Dept. of Forest Yield Research. ISSN 0348-7636. ISBN 91-576-2528-x. 150 pp. Garpenberg, Sweden; page. 38.
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